2. The light bulb is on, the middle fan is working, and the one on the right is fermenting.
3. The general oven has the following functions.
Extended data:
operating guide
1, universal drying oven. Firstly, the wall surface of the vacuum chamber is heated, and then the workpiece is irradiated through the wall surface. In this way, the temperature sensor of the temperature control instrument can be arranged on the outer wall of the vacuum chamber. Generally speaking, at 200℃, it is normal that the temperature reading of the instrument is within 30℃ from that of the glass rod thermometer. If the temperature sensor of the temperature control instrument is arranged in the vacuum chamber, the difference between the temperature value of the glass rod thermometer and the temperature reading of the instrument can be appropriately reduced, but it is impossible to eliminate it, and the sealing reliability of the vacuum chamber adds a possibly unreliable link.
2. Electric oven. Both of them are equipped with temperature uniformity parameters: the upper working temperature limit of natural convection oven is multiplied by 3%, and the upper working temperature limit of forced convection oven is multiplied by 2.5%. It is almost impossible to make the temperature of the working room uniform by the movement of gas molecules in the vacuum drying oven. Therefore, conceptually, we can no longer apply the definition of temperature uniformity stipulated by the usual electrothermal (blast) drying oven to the vacuum drying oven. It is also meaningless to set this index in a vacuum state. The amount of thermal radiation is inversely proportional to the square of the distance.
Safety problems that should be paid attention to when using oven
1. Pay attention to cleaning when using the electric oven for the first time. Wipe the inside and outside of the oven with a clean wet cloth to remove some dust. Then you can bake it in an empty oven at high temperature for a while, and sometimes white smoke may appear, which is normal. Pay attention to ventilation and heat dissipation after baking.
2. After cleaning, you can use the electric oven normally. Before baking any food, it needs to be preheated to the specified temperature to meet the baking time in the recipe. It takes about 10 minutes to preheat the oven. If the preheating time of the oven is too long, it may also affect the service life of the oven.
Be careful that the oven is heated to avoid burning. In addition to the high temperature inside, the shell and glass door are also very hot. Be careful when opening or closing the oven door to avoid being scalded by the glass door. Always use the handle when putting the baking tray into or taking it out of the oven. It is forbidden to touch the baking tray or baked food directly with your hands. Do not touch the heater or other parts of the furnace cavity to avoid scalding.
When you use the oven, you should adjust the temperature first. When the oven is used, adjust the temperature first, and then turn the time knob clockwise.
5. After each use, clean it after cooling. It should be noted that when cleaning the door and the shell of the furnace cavity, it should be wiped with a dry cloth, not washed with water. If there is dirt that is difficult to remove, you can gently wipe it off with detergent. Other accessories of electric oven, such as baking tray and baking net, can be washed with water.
6. The oven must be placed in a ventilated place. Don't be too close to the wall to help dissipate heat. Moreover, it is best not to put the oven near the water source, because the overall temperature of the oven is very high when it works, and it will cause temperature difference when it touches water.
7. Don't stay in front of the oven for a long time when the oven is working. Don't stay too long in front of the oven. If you find any cracks, please stop using the glass door of the oven immediately.
Baidu encyclopedia: oven